Help 11

If you replace the varaibles you will get:

$\frac{1}{3}(3^2)+5.2(2)$

First complete: $\frac{1}{3}(3^2)$

$\frac{1*3^2}{3}$

$\frac{3^2}{3}$

$3$

Then complete: $5.2(2)$

$5.2(2)$

$10.4$

Now you have:

$3+10.4$

$13.4$

Your answer is 13.4

Hope this Helps ;P